This Lexmark 56F1U00 remanufactured or compatible toner cartridge is a replacement laser cartridge that can be used instead of buying new OEM (original brand) Lexmark toner cartridges. This product is manufactured to be comparative to the original in terms of quality and page yield. Our stringent quality standards for remanufacturing ensure that all worn out parts are 100% replaced and that the cartridge is refilled with brand new high quality premium toner. This results in a remanufactured or compatible Lexmark 56F1U00 toner cartridge with new aftermarket components, ultra-fine particle toner and an exclusive sealing process to ensure a leak-proof cartridge. Extensive testing and R&D have enabled us to produce cartridges that will not only save you money, but also provide a high quality product to ensure long term customer satisfaction.